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How do I reverse a servo travel direction

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Old 08-23-2012, 06:41 AM
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skylane42
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Default How do I reverse a servo travel direction

How can you reverse the servo direction on a servo? Can you just change the plug lead wires around or do you have to go into the motor and change wiring? I am hooking up some aileron servos and need one reversed. It is a EDF micro so there really is not enough room for a servo reverser.
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Old 08-23-2012, 06:51 AM
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Default RE: How do I reverse a servo travel direction

In order of best choice

1. Hook it up to a separate channel and use the transmitter to reverse the individual servo
2. See if they sell a reversed direction servo (probably not in your case but there are plenty out there)
3. Yes, you need to modify the motor wires. The plug leads are all the same, ground, power, and signal, swapping them around will result in the servo not working.
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Old 08-23-2012, 06:58 AM
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skylane42
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Default RE: How do I reverse a servo travel direction

Thanks, That is what I thought. Just wanted to make sure.
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Old 08-23-2012, 08:26 AM
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Default RE: How do I reverse a servo travel direction

it's not a simple swap the motor wires - you have to swap the ends of the feedback pot, also - and in some servos, the pot is mounted to the circuit board in the servo, and you may have to cut traces and use tiny wire to accomplish this..

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Old 08-23-2012, 08:27 AM
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Default RE: How do I reverse a servo travel direction

Is there any way possible you could just mechanically connect the linkage to the other side of the servo arm?
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Old 08-23-2012, 11:53 AM
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skylane42
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Default RE: How do I reverse a servo travel direction

Nope, the servo mounts so the arm stick out the bottom. I found another servo that was reversed so now I think I can go fly some more.
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Old 08-23-2012, 12:42 PM
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Default RE: How do I reverse a servo travel direction

that sounds good - fly more!
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Old 08-25-2012, 09:30 AM
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Default RE: How do I reverse a servo travel direction

If that servo is used alone, swapping brands to reverse it is fine. However, if it is one of a pair (like one on each aileron or each elevator half) you need to be sure that the two move the same amount and rate or there may be some control problems. Even when the servos are the same brand, this difference can present a problem.
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Old 08-25-2012, 01:09 PM
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skylane42
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Default RE: How do I reverse a servo travel direction

They were the left and right servos. I had to move the link in one hole and they are pretty darn close. I have not test flown yet.
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Old 08-26-2012, 03:32 PM
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Default RE: How do I reverse a servo travel direction


ORIGINAL: skylane42

Nope, the servo mounts so the arm stick out the bottom. I found another servo that was reversed so now I think I can go fly some more.
Yes, but when you mount them, the output shafts should be facing towards the wingtips in a mirror image to provide proper aileron operation. With ailerons the servos both should actually rotate in the same direction.
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